By utilizing the integrated data of land-surface processes observed in Dunhuang arid region in northwest China from Sep.2000 to Aug.2001, observed the middle of arid region in Hexi Corridor in Zhangye from Nov.2005 to Oct.2006, observed Dingxi Synthetical Experimental Observatory of Land Surface Process in the Semi-arid Region in the Loess Plateau from Nov.2004 to Oct.2005, in and observed at the Semi-Arid Climate and Environment Observatory of Lanzhou University (SACOL) from Nov.2008 to Oct.2009, t...